/ 
SHARYANTO-Utils-0.59
River stage zero No dependents
/ SHARYANTO::HTTP::DetectUA::Simple

NAME

SHARYANTO::HTTP::DetectUA::Simple - A very simple and generic browser detection library

VERSION

version 0.59

AUTHOR

Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2013 by Steven Haryanto.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

DESCRIPTION

I needed a simple and fast routine which can detect whether HTTP client is a GUI browser (like Chrome or Firefox), a text browser (like Lynx or Links), or neither (like curl, or L). Hence, this module.

FUNCTIONS

None are exported by default, but they are exportable.

detect_http_ua_simple(@args) -> [status, msg, result, meta]

This function is a simple and fast routine to detect whether HTTP client is a GUI browser (like Chrome or Firefox), a text-based browser (like Lynx or Links), or neither (like curl or LWP). Extra information can be provided in the future.

Currently these heuristic rules are used:

  • check popular browser markers in User-Agent header (e.g. 'Chrome', 'Opera');

  • check Accept header for 'image/';

It is several times faster than the other equivalent Perl modules, this is because it does significantly less.

Arguments ('*' denotes required arguments):

  • env => any

    CGI-compatible environment, e.g. \%ENV or PSGI's $env.

Return value:

Returns an enveloped result (an array). First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.